【摘要】 介绍了一种便携式多路微弱医学生物电信号处理系统,用户可根据实际的需要对电极进行选择,从而实现对脑电或心电信号的实时采集,进而对其进行数据处理并显示波形和存储数据。该系统采用德州仪器(TI)公司的ADS1198为核心的模拟前端电路实现脑电或心电信号的采集、放大、隔离等预处理操作,利用Altera公司的FPGA芯片Cyclone Ⅱ EP2C70F896C6对数据进行处理,并在TRDB_LTM液晶屏上显示波形。该系统精度高、体积小、功耗低,具有较好的实用性和可扩展性。更多还原

【Abstract】 A portable multichannel bioelectrical signal processing system is proposed.Through electrode selection according to the actual needs,the system can collect,process,display and store EEG or ECG signal in real-time.Texas Instruments(TI)Company’s ADS1198is employed as the core for the analog front-end circuit,realizing EEG or ECG acquisition,amplification,isolation and other pretreatment operations.Altera Company’s FPGA chip Cyclone II EP2C70F896C6is used for processing the data,displaying waveform in the LCD screen of TRBD_LTM.The system has high accuracy, small size,low power consumption,good practicality and scalability.更多还原